ASTROSAT CZTI

Data Quality Report

Orbit 12557

Creation date: 2024-06-27T16:29:09.810348
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A04_201T03_9000001862_12557cztM0_level2.evt modeM0/AS1A04_201T03_9000001862_12557cztM0_level2_quad_clean.evt
Size (bytes)61,352,64015,117,120
Size58.5 MB 14.4 MB
Events in quadrant A452,06897,400
Events in quadrant B466,780102,726
Events in quadrant C437,79098,714
Events in quadrant D444,08795,324

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05739
B05434
C05838
D05739

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A059154058
B065574659
C059054077
D062014360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C021
D011

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79115819.974716%
B79916320.400501%
C77111715.175097%
D78112415.877081%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 1174 943 0 0 0.00% 0.00%
B 2263 958 0 0 0.00% 0.00%
C 2242 932 0 0 0.00% 0.00%
D 1192 938 0 0 0.00% 0.00%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 8 15 4755 171.54 114 111 27.1
A 1 162 1712 59.14 114 111 27.1
A 12 189 1101 36.57 114 111 27.1
B 0 205 5062 190.67 116 111 26.0
B 11 51 4627 173.92 116 111 26.0
B 0 214 4556 171.18 116 111 26.0
C 8 128 969 30.51 111 111 28.1
C 13 61 842 25.99 111 111 28.1
C 8 112 445 11.88 111 111 28.1
D 4 228 8677 285.32 113 108 30.0
D 8 195 5094 166.02 113 108 30.0
D 1 52 4703 153.0 113 108 30.0

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter